There are a lot of ways to spread information and knowledge about marine litter (and all issues for that matter) one of the ones I think is amazing is photography. Not something that I am artistically capable of, I very much appreciate those who can.
Benjamin Von Wong used 10,000 plastic bottles to create these masterpieces. Read more about his work here
Shannon Dermody uses Disney Princess to address real world issues. Check out more of her work here.